Belt-throwing device.



No. 887,982. PATENTED DEC. 11, 1906.

K. UELAND.

BELT THROWING DEVICE. APPLIGATION FILED JUNE 4, 190a.

' 2 sums-sum 1.

WWNM ill Zea; ea. 797- 7453 'QQWWZI/J" W' obzm'wvawz 1m: NORRIS PETERSco. wnsumuruu, n. c.

K. UELAND.

BELT THROWING DEVICE. Arruuuxox FILED JUNE 4, 1906.

2 SHEETS-SHEET 2.

- A mm\\\\\\\\\ w rmz'mmms PETERS co., wAsmumvN. D c,

PATENTED DEC. 11, 1906. I

KALMER UELAND, OF SHELLY, MINNESOTA.

BELT-THROWING DEVICE.

Specification of Letters Patent.

Patented Dec. 11, 1906.

Application filed June 4, 1906. Serial No. 320.090.

To all whom it may concern:

Be it known that I, KALM R UELAND, a citizen of the United States,residing at Shelly, in the county of Norman and State of Minnesota, haveinvented certain new and.

' make and use the same.

My invention has for its object to provide an improved belt-throwingdevice espe-l cially adapted for use in connection withthreshing-machine engines; and to the abo ve ends the invention consistsof the novel devices and combinations of devices hereinafter described,and defined in the claims.

The invention is illustrated in the accompanying drawings, wherein likecharacters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a plan view showing the improvedbelt-throwing device. Fig. 2 is a horizontal section taken through thedevice on the line 00 x of Fig. 3. Fig. 3 is a vertical section takenapproximately on the line 00 00 of Fig. 1, and Fig. 4 is a sideelevation of the said device.

The numeral 1 indicates a supportingbracket, which, as shown, isprovided with a hollow horizontally-projected stem portion 2, that isrectangular in cross-section. The said bracket 1 is adapted to besecured to the boiler of the engine adjacent to the drivingpulleythereof. A rectangular sleeve 3 is mounted to slide on the hollow stemportion 2, and this sleeve is provided with a vertical spindle 4, uponwhich is loosely mounted a vertically-disposed guide-roller 5.

The outer end of the hollow stem 2 is bifurcated, and a head 6 ispivoted thereto, as shown, by means of a bolt 7. This head 6 carries aspindle 8, upon whichaguide-roller 9 is loosely mounted. The head 6 isnormally held, as shown in Fig. 3, by means of a lock-dog 10, that ispivoted within the hollow stem 2 by a pin 10 and engages a tooth orshoulder 11 on the said head 6. WVhen the roller 9 is held in theposition shown in Fig. 8, the two rollers 5 and 9 are in position toguide the belt 12 to the pulley, (not shown,) but over which the saidbelt will in practice be arranged to run.

As a means for causing the sleeve 3 to move upon the stem 2 a bell-crank13 is pivoted at 14 to the bracket 1, and one arm of this bellcrank isconnected to said sleeve by a link 15 while the other arm of saidbell-crank is connected by a long link 16 to an operating-lever 17,which latter may be pivotally mounted on any suitable part of theengine.

The lock-dog 10 before noted is provided with a long arm 10*, thatextends horizontally within the hollow stem 2 and normally rests uponone arm of a small bell-crank 18, which bell-crank is pivotallysupported within said stem 2 by a transverse pin 19 and the other arm ofwhich projects upward. The sleeve 3 carries a tripping-plate 20, which,as shown, is directly secured to the depending end of the spindle 4. Itwill be noted that the top of the hollow stem 2 is slotted at 2 toafford clearance for the hub portion of the tripping-plate 20. Theupwardly-projecting arm of the bell-crank 18 normally rests against theoutward extremity of the said tripping-plate 20, but stands in suchposition as to permit the dog 10 to engage the tooth 1 1 of the pivotedroller-supporting head 6.

When it is desired to quickly throw the belt off from the engine-pulleyover which it normally runs, the said belt is forced outward and out ofline with said pulley by an outward movement of the guide-roller 5. Thisoutward movement of said pulley 5 is accomplished by a movement of thelever 17 toward the right from the position shown, under which movementthe sleeve 3, together with said guide-pulley 5, are moved outward. Theinitial outward movement of the sleeve 3 causes the tripping-plate 20 toforce the upper arm of the bell-crank 18 toward the right with respectto Fig. 3 and then slightly downward, thereby raising the other arm ofsaid bell-crank and the long arm 10 of the look-dog 10, and therebycausing said lock-dog to release the pivoted head 6, so that the roller9 when pressed outward by the engagement of the belt 12 therewith willbe caused to drop into the position shown in Fig. 4. It will thus beseen that the outward movement of the roller 5 positively crowds thebelt off from its pulley and that the roller 9 is automatically droppedinto an inoperative position, so that it will not prevent the said beltfrom being readily thrown off from said pulley.

The device above described while simple and of small cost affords meansfor very quickly and easily throwing a belt from its cooperatingpulleys, and, furthermore, when tion with a supporting-bracket, of apair of,

roller-supporting devices, one of which is mounted to slide upon saidbracket and the other of which is directly pivoted thereto, rollersmounted on said roller-supporting devices, a lock for normally holdingthe pivoted roller-supporting device in operative position, means formoving said sliding roller-supporting device, and means for causing saidlock to release said pivoted rollersupporting device, when the saidsliding roller-supporting device and cooperating roller are movedlaterally, substantially as described.

2. In a belt-throwing device, the combination with a supporting-stem anda sleeve mounted to slide thereon, of a belt-guiding roller carried bysaid sleeve, a head pivoted to the outer head of said stem, a rollermounted on said head, a lock-dog operative on said head to hold theroller supported thereby in an operative position, 'means for slidingsaid sleeve on said stem, and a device carried by said sleeve forcausing said dog to release said head under a sliding movement of saidsleeve, substantially as described.

, 3. In a belt-throwing device, the combination with a hollow stem and asleeve mounted to slide thereon, of means for moving said sleeve on saidstem, a belt-guiding roller carried by said sleeve, a head pivoted tothe outer end of said stem, a belt-guiding roller supported by saidhead, a lock-dog operative on said head to normally hold the rollercarried thereby in an operative position, said said sleeve, a trippingbell-crank mounted. within said stem and operative on the arm of saidlock-dog, and a tripping-plate carried by said sleeve and operative onsaid tripping bell-crank to cause the same to trip said lock-dog, undersliding movement of said sleeve, substantially as described.-

In testimony whereof I afliX my signature in presence of two witnesses.

KALMER UELAND.

I/Vitnesses:

L. MANNITsoN, J AMES T. I-IANsoN.

lock-dog having an arm extending within

